package m.ChainOfResponsibility;

public abstract class AbstractLogger {
    public static int INFO = 1;
    public static int DEBUG = 2;
    public static int ERROR = 3;
  
    protected int level;
  
    //责任链中的下一个元素
    protected AbstractLogger nextLogger;
  
    public void setNextLogger(AbstractLogger nextLogger){
       this.nextLogger = nextLogger;
    }
  
    public void logMessage(int level, String message){
       if(this.level <= level){
          write(message);
       }
       if(nextLogger !=null){
          nextLogger.logMessage(level, message);
       }
    }
  
    abstract protected void write(String message);
    
 }